/**
 * ***************************************************************************** Copyright (c) 2000,
 * 2008 IBM Corporation and others. All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0 which accompanies this
 * distribution, and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * <p>Contributors: IBM Corporation - initial API and implementation
 * *****************************************************************************
 */
package org.eclipse.jdt.internal.corext.refactoring.code.flow;

import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jdt.core.dom.ReturnStatement;

class ReturnFlowInfo extends FlowInfo {

  public ReturnFlowInfo(ReturnStatement node) {
    super(getReturnFlag(node));
  }

  public void merge(FlowInfo info, FlowContext context) {
    if (info == null) return;

    assignAccessMode(info);
  }

  private static int getReturnFlag(ReturnStatement node) {
    Expression expression = node.getExpression();
    if (expression == null
        || expression.resolveTypeBinding()
            == node.getAST().resolveWellKnownType("void")) // $NON-NLS-1$
    return VOID_RETURN;
    return VALUE_RETURN;
  }
}
